Length and elongation sensor

Details Length and elongation sensor Length and elongation sensor

1996-04-18

1998-04-07

Hellner, Mark

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 32, 356383, G01C 308, G01B 1116, G01B 1102

Patent

active

057370672

ABSTRACT:
A length and elongation sensor includes an elastomeric optical wave guide d a time domain reflectometer. The elastomeric optical wave guide consists of a urethane outer cladding and an optical gel core. A transparent window is hermetically sealed to the first end of the optical wave guide and a reflective mirror is hermetically sealed to the second end of the optical wave guide. Both ends of the wave guide are then fixedly attached to the unit to be measured. The time domain reflectometer is operative for propagating a light pulse through the optical wave guide and for measuring the round-trip propagation time of the light pulse. Since the velocity of the light pulse is known, the length of the wave guide can easily be determined. The wave guide is stretchable up to 25% of its original length thereby allowing both static and dynamic length measurements of the unit to be measured.

REFERENCES:
patent: 4928004 (1990-05-01), Zimmermann et al.
patent: 4950886 (1990-08-01), Claus et al.
patent: 5359405 (1994-10-01), Andrews
patent: 5381005 (1995-01-01), Chazelas et al.
patent: 5488475 (1996-01-01), Friebele et al.
patent: 5499313 (1996-03-01), Kleinerman

Affiliated with

Also associated with

Rating

Length and elongation sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Length and elongation sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Length and elongation sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-17822